I picked up one of the cheap ad9850 modules from China and made a new vfo. I modified this code from ak2b to use the ad9850 instead of the si5351. To see my si5351 vfo, click here.
As you can see from the waveform and the frequency counter at the bottom, this little module seems very accurate. Since it also produces a square wave output, I may try to build a little function generator.
I also tried my hand at some surface mount soldering. I picked up a few bare si5351 chips and some little adapter boards. I was just able to get it done with the big chisel tip I had on the iron, but before I do any more, I’m going to pick up a finer tip. I may try the solder paste and heat gun thing as well.